Odiorne
Odlin
Odoevsky
O’Donnell
O’Doyne
Odrowaz
Odrowazowna
Odum
O’Dyer
of Allt Llwyn ap Ienen ap Llewellyn ap Gruffydd Lloyd
of Anjou
of Bavaria
of Blois
of Brittany
of Burgundy
of Carrick
of Castille
of Conversano
of Dampierre
of Edinburgh
of France
of Germany
of Hesbaye
of Holstein-Gottorp
of Huntingdon Scotland
of Islay
of John
(of) Lancaster
of Laon
of Lincoln
of Lorraine-Brionne
of Meaux
of Mecklenburg-Schwerin
of Navarre
of Normandy
of Orange
of Poitiers
of Pomerania
of Sainte-Marie de Soissons
of Savoy
of Saxe-Coburg-Saalfeld, of Saxe-Coburg and Gotha
of Schleswig-Holstein-Sonderburg-Glucksburg
of Stephen
of Sully
of the Isles
of Troyes
of Tyddin Tyfod
of Valois
of Vermandois
Offerl
Offing Offin
Offley
O’Flaherty
Ofman
Ogden
Ogdon
Ogelvie
Ogier
Ogilvie
Ogilvy
Oglander
Ogle
Oglethorpe
O’Hanlan
O’Hara
O’Hare
OHearn
Ohlmann
Ohlmann Exline
Ohlmeyer
Ohlsen Olsen
Oja
Okebanke
O’Kelly
O’Kennedy Finn
Okeover
O’Killey
O’Killey Kelley
Olafsdottir
Olafsson
Olavsson
Olcott
Old Chief
Oldage
Oldfield
Oldham
Oldrid
Olds
O’Leary
Olelko
Olelkowicz-Slucky
Olfsdottir
Olgerdovich
Oligny Lauvergnat
Olini Oligny
Oliphant
Oliver